Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows.

For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option.

If you’ve lost or can’t find the product key, contact the manufacturer. To ensure your product key is genuine, see How to tell your software is genuine and How to tell your hardware is genuine.

Remove one or more hyperlinks from a page, or turn off automatic hyperlink creation as you type.

Learn how to recover a hacked or compromised account, what to do next, and how to prevent your account from being compromised in the future.

In these cases, contact the administrator for your work or school account to use this authentication method. If you are allowed by your admin to use phone sign-in using Authenticator, you'll be able to go through device registration to get set up for passwordless phone sign-in and two-step verification.

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

Learn how to use drag and drop to transfer content between your Android device and PC.

If the account Type is Microsoft Exchange, contact your Exchange administrator to make the name change. You can change your name on the Account Settings screen.

When you enter a recipient's name in the Bcc (blind carbon copy) field of an email, that recipient receives a copy of the email without their name being visible to the other recipients. Select a tab option below for the version of Outlook you're using. What version of Outlook do I have?